import json
from channels.generic.websocket import AsyncWebsocketConsumer

from django_redis import get_redis_connection
redis_con = get_redis_connection()

class ChatConsumer(AsyncWebsocketConsumer):
    async def connect(self):
        self.room_name = self.scope['url_route']['kwargs']['room_name']
        self.room_group_name = 'chat_%s' % self.room_name
        # Join room group
        await self.channel_layer.group_add(
            self.room_group_name,
            self.channel_name
        )

        await self.accept()
        await self.send(json.dumps({123: '123'}))

    async def disconnect(self, close_code):
        # Leave room group
        await self.channel_layer.group_discard(
            self.room_group_name,
            self.channel_name
        )

    # Receive message from WebSocket
    async def receive(self, text_data):
        print('接收到的数据为:{0}'.format(text_data))
        text_data_json = json.loads(text_data)
        redis_con.lpush('transactions', text_data)
        data = redis_con.lrange('transactions', 1, 3)

        message = text_data_json['message']

        # Send message to room group
        await self.channel_layer.group_send(
            self.room_group_name,
            {
                'type': 'chat_message',
                'message': '{0}'.format(message),
                'data': data,
            }
        )

    # Receive message from room group
    async def chat_message(self, event):
        message = event['message']
        data = event['data']
        print(event)

        # Send message to WebSocket
        await self.send(text_data=json.dumps({
            'message': message,
        }))




class TradeConsumer(AsyncWebsocketConsumer):
    async def connect(self):
        self.room_name = self.scope['url_route']['kwargs']['stock_id']
        self.room_group_name = 'info_%s' % self.room_name

        # Join room group
        await self.channel_layer.group_add(
            self.room_group_name,
            self.channel_name
        )

        await self.accept()

    async def disconnect(self, close_code):
        # Leave room group
        await self.channel_layer.group_discard(
            self.room_group_name,
            self.channel_name
        )

    # Receive message from WebSocket
    async def receive(self, text_data):
        print('接收到的数据为:{0}'.format(text_data))
        text_data_json = json.loads(text_data)
        message = text_data_json['message']
        print(self.scope)

        # Send message to room group
        await self.channel_layer.group_send(
            self.room_group_name,
            {
                'type': 'chat_message',
                'message': '{0}'.format(message)
            }
        )

    # Receive message from room group
    async def chat_message(self, event):
        message = event['message']

        # Send message to WebSocket
        await self.send(text_data=json.dumps({
            'message': message
        }))